A011787 - OEIS

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A011787

Number of n X n matrices over Z_4 whose determinant is 1.

1, 48, 43008, 660602880, 167761422581760, 692647993190048071680, 46119672943810238272430407680, 49327181820263339694887026906732953600, 845779385319367513935228608424336170436211507200 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`a(n) = A065128(n)/2`
	CROSSREFS	`Sequence in context: A159665 A164278 A159441 * A006070 A081262 A008704` `Adjacent sequences: A011784 A011785 A011786 * A011788 A011789 A011790`
	KEYWORD	`nonn`
	AUTHOR	`benlove(AT)preston.polaristel.net (Benjamin T. Love)`
	EXTENSIONS	`More terms from Max Alekseyev (maxale(AT)gmail.com), Jan 22 2012`

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Last modified February 16 11:51 EST 2012. Contains 205908 sequences.